【正确答案】 D

【答案解析】[听力原文]32-35
The twentieth century has brought with it many advances. (32) With those advances, human lives have changed dramatically. In some ways life is worse, but mostly it is better. Changes in food preparation methods, for example, have improved our lives greatly.
Food preparation today allows for more variety. With refrigerators and freezers, we can preserve a lot of different foods in our homes. (33) Since technology makes cooking so much faster, people are willing to make several dishes for even a small meal. Parents are more likely to let children be picky, now that they can easily heat them up some prepackaged cakes and cheese on the side. Needless to say, adults living in the same house may have very different eating habits as well. If they don't want to cook a lot of different dishes, it's common now to eat out at restaurants several times a week.
(34) Healthful eating is also easier than ever now. When people cook, they use new fat substitutes and cooking sprays to cut fat and calories. This reduces the risk of heart disease and other diseases. Additionally, we can buy fruits and vegetable fresh, frozen or canned. They are easy to prepare, so many of us eat more of those nutritious items daily. Our lifestyle is fast, but people still like good food. (35) What new food preparation technology has given us is more choices. Today, we can prepare food that is more convenient, healthier, and of greater variety than ever before in history.
32．What do we know about the influence of the advances in 20th century on human lives?

[听前猜测] 由选项推测本题与Human lives发生的变化有关。
[精解] 本题关键句为“With those advances，human lives have changed dramatically．”随着社会的进步，人类的生活发生了巨大的变化。由此可见，选项D)为本题的正确答案。

【正确答案】 A

【答案解析】[听力原文]
Why are people willing to make several dishes for even a small meal?

[听前猜测] 由选项推测本题与cooking有关。
[精解] 本题关键句为“since techonology makes cooking so much faster，people are willing to make several dishes for even a small meal．”烹饪技术的发达使得做饭速度更快，所以即使在平时吃饭时人们也会做上几道菜，故本题的正确答案为A)。

【正确答案】 B

【答案解析】[听力原文]
How do people nowadays keep a healthful eating?

[听前猜测] 由选项推测本题与人们的饮食习惯有关。
[精解] 本题关键句为第二段首句，现在实现健康饮食也比以前容易多了。人们在做饭时可以使用新型的脂肪替代品来减少脂肪和热量的摄人。由此可见，选项B)为本题的正确答案。

【正确答案】 C

【答案解析】[听力原文]
What can be inferred from the passage?

[听前猜测] 由选项推测本题与food，eating habits，food preparation technology或children有关。
[精解] 本题关键句为“What new food preparation technology has given us is more choices．”新型的食品制作技术给人们带来更多的选择，选项中的greater variety是对短文中more choices的同义转述，所以选项C)为本题的正确答案。